The 80th Oregon Legislative Assembly convened for its first of two regular sessions on January 22, 2019, and met for three special sessions, the last of which concluded on December 21, 2020. In the November 2018 elections, the Democratic Party of Oregon gained supermajority status in both houses: one seat in the Senate for an 18–12 majority, and three seats in the House for a 38–22 majority. From May 29 to June 28, 2019, the 10th senate district was vacant, following the death of senate minority leader Jackie Winters.
